JP2565611B2 - Roof with solar cells - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roof of a house or the like to which a solar cell is attached.

[0002]

2. Description of the Related Art Heretofore, it has been practiced to install a solar cell on the roof of a building structure such as a house and supply power to the house from the solar cell to save energy. When installing a solar cell on the roof, a fixed stand type that fixes the panel-shaped solar cell unit provided with the solar cell with a dedicated stand on the existing roof, or a so-called The roof panels are used as roof tiles for solar cells.

[0003]

By the way, a solar cell generates electricity by sunlight, but if the solar cell itself is excessively heated, the energy conversion efficiency tends to decrease. In the case of a fixed pedestal type or a solar cell roof tile, it is necessary to provide a means for preventing heat from escaping (dissipating heat) and preventing a decrease in energy conversion efficiency.

Further, in the case of the fixed frame type, the wiring of the electric wires of the solar cell is exposed to the outside, which is easily affected by direct wind and rain and sunlight, which poses a problem of durability and makes it difficult to keep the rain. It takes time and effort to route the wiring indoors because it has to go up to the roof.

Further, in the solar cell roof tile, a connector for energization is provided at the joint between the roof tiles, but there is a problem that this connector is apt to corrode when rainwater enters.

The present invention has been made in view of the above circumstances, and it is possible to prevent a decrease in energy conversion efficiency due to high heat, to always obtain a stable power supply, and to wire an electric wire of a solar cell to wind, rain, or the sun. Less susceptible to light,
Moreover, it is an object of the present invention to provide a roof panel with a solar cell, which is configured to be easily handled indoors.

[0007]

The present invention has been made to achieve the above object, wherein a plurality of roof panels with solar cells are arranged at least along one slope of a roof and fixed to a beam. In a roof with a solar cell of a house or the like, the roof panel, a panel-shaped solar cell unit having a solar cell built in is attached to the upper surface of the roof panel body, and between the roof panel body and the solar cell unit. The roof panel is formed by forming a ventilation layer along the lower surface of the solar cell unit and open in the direction of inclination of the roof.
The ventilation layer is fixed to the beam in a state where the ventilation layer extends from the eaves portion toward the ridge portion along the inclined surface thereof, and the electric wire of the solar cell is connected to the roof panel when the roof panel is assembled, and the ventilation is performed.
It is characterized in that it is wired in the layer and is drawn out to the ridge side of the roof panel body and wired in the house.

[0008]

According to the roof panel with a solar cell of the present invention, the roof panel is formed by attaching a panel-shaped solar cell unit having a built-in solar cell on the upper surface of the roof panel body. between the units, along the lower surface of the solar cell unit and to form a vent layer which is open in the direction of inclination of the roof, the roof panel, the vent layer along the inclined surface toward the ridge portion from the eaves section Since it is fixed to the beam in the extended state, the air flow through the ventilation layer of the roof panel becomes an ascending airflow from the eaves portion toward the ridge along the roof inclination direction. The ascending air current directly cools the lower surface of the solar cell unit, which promotes heat dissipation and suppresses temperature rise.
As a result, the energy conversion efficiency of the solar cell unit is always maintained high, and stable power supply can be achieved.

Further, the electric wires of the solar cell are wired in the ventilation layer and drawn out to the ridge side of the roof panel body to be wired in the house.
Therefore, it is protected by the solar cell unit and
It is not exposed and is not easily affected by wind and rain. Well
Also, connect the wires when assembling the roof panel.
By pulling it out to the ridge side, it can be used as a ventilation layer during construction.
It is possible to pull out from the building to the ridge side and wire indoors
This facilitates the handling of indoor wiring.

Furthermore, since the electric wires of the solar cell unit wired in the ventilation layer are wired in the house from the ridge,
If you connect the wires to the roof side when assembling the roof panel and pull them out toward the ridge side, you can pull them out from the ventilation layer to the ridge side and wire them indoors during construction. There is no need to perform work, and it becomes easy to handle indoor wiring.

[0011]

[0012]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a roof 2 having a plurality of roof panels (hereinafter abbreviated as roof panels) 1 with solar cells according to one embodiment.
Are shown, and the roof panel 1 comprises the whole roof 2A facing south.

[0013] roof panel 1 has been integrally formed from the eaves portion J1 residential J over the ridge J2, the upper surface of the roof panel body 3, the solar cell is built panel-shaped solar cell module (solar cell Unit) 4 is affixed to the roof panel body 3 and the solar cell module 4 in a plural number.
Along the lower surface of the solar cell module 4 and the inclination of the roof.
The ventilation layer 5 opened in the diagonal direction is from the eaves part J1 to the ridge J
It has a basic structure formed so as to communicate with two.

As shown in FIGS. 2 and 3, the roof panel body 3 has a roof panel body 3A stretched on the ridge J2 side of the roof 2 and a roof panel body 3B stretched on the eaves side J1 side.
Are joined. These are all rectangular and have the same width, but the length is set longer in the roof panel body 3B.

The roof panel body 3 (3A, 3B) has a plurality of vertical core members 8 and horizontal core members 9 fixed to the lower surface of a rectangular plywood 7 having an asphalt roofing 6 on the upper surface. The vertical core member 8 is fixed to both edges and the center of the plywood 7 along the length direction. Moreover, the horizontal core material 9a is fixed to both edge portions of the plywood 7 along the width direction.
There are two types of horizontal core members 9b (two in this case) fixed to the plywood 7 along the width direction of the plywood 7 between them. The horizontal core members 9 are arranged at equal intervals. The vertical core material 8 and the horizontal core material 9 are fixed to the plywood 7 with an adhesive and nailing.

On the other hand, in the solar cell module 4, as shown in FIG. 4, a solar cell (not shown) is built in a rectangular transparent plate 10, and a plurality of transparent plates 10 (in this case, 6 It is a panel that is combined in a rectangular shape. A solar cell is an energy converter using a PN junction, for example, N-type Si
A P-type layer having a thickness of 1 to 3 μm is formed on the substrate so that light reaches the PN junction from the surface, and the one utilizing the photovoltaic effect is used.

The solar cell module 4 has the same width as the roof panel bodies 3A and 3B, and the length direction of the solar cell module 4 is aligned with that of the roof panel bodies 3A and 3B. A plurality of (five in this case) affixed in the closed state.

As shown in FIG. 5, the seal joint 11 has an elastic member 13 such as butyl rubber for sealing the joint end of the transparent plate 10, a packing 14 provided between these elastic members 13, and these elastic members. A cushion 15 for holding the member 13 and the packing 14 and a joint piece 16 for holding the cushion 15 are provided. By fixing the upper joint piece 16 and the packing 14 with a screw 17, it is transparent. Board 10.1
0 are joined to each other. In addition, this seal joint 11
Is designed to stop water between the transparent plates 10 by means of an elastic member 13 or the like.

On the upper surface of each roof panel body 3A, 3B, a prism 18 is fixed by an adhesive or the like at both edges along the length direction and in the center between the edges. . These spacers 18 are provided on the roof panel body 3A,
3B, and extend along the length direction.
The joint piece 16 on the lower side of the seal joint 11 is fixed on the upper surface of the solar cell module 8 with an adhesive or the like.
B). Then, as shown in FIG. 2 and the like, due to the presence of the spacer 18, a gap corresponding to the thickness of the spacer 18 is provided between the upper surface of the roof panel body 3 (3A, 3B) and the lower surface of each solar cell module 4. Is formed, and this void extends in the length direction of the roof panel 1 to form the ventilation layer 5 extending from the eaves tip portion J1 to the ridge portion J2.

A plurality of panel-shaped solar cell modules 4 provided with solar cells are attached to the roof panel main body 3 (3A, 3B), and the ventilation layer 5 is formed between the two. As shown in FIG. 1, the roof panel 1 has the solar cell module 4 facing upward and the roof panel body 3A with the ridge J.
The roof panel body 3B is fixed to the ridge beam 21, the roof beam 23 at the upper end of the outer wall panel 22, and the roof beam 24 between them in a state where the roof panel body 3B is arranged on the second side on the eaves portion J1 side.

More specifically, the lengthwise ends of each of the vertical core members 8 of the roof panel body 3A have a master beam 21 and a roof beam 24.
Ridge J of each vertical core 8 of the roof panel body 3B
The end on the 2 side is the roof beam 24, and the eaves portion J of each vertical core member 8
The one side is fixed to the roof beam 23, respectively. The vertical core members 8 are fixed by an adhesive or the like.

Then, a plurality of roof panels 1 are laterally arranged in close contact with each other to form a roof 2A.
The adjacent roof panels 1 are joined to each other by joining the solar cell modules 4 (the transparent plates 10 thereof) to each other by the seal joint 11.

As shown in FIG. 3, the eaves tip J1 is provided with an eaves tip hardware 25 having an L-shaped cross section and a nasal concealment 26, respectively.
8a and a gable 28b are respectively attached.
In addition, the eaves portion J1 between the eaves hardware 25 and the gable 28b.
The opening 40 is provided with a large number of small holes 40a, as shown in FIG. 6, to prevent the penetration of wind and rain into the ventilation layer 5.

The roof panel 1 constitutes a roof 2A facing the south of the house J, and the roof 2B on the opposite side is formed on the roof panel body 3 (3A, 3B) with a core material 41 interposed therebetween. A roofing material 42 is stretched and configured.

Further, as shown in FIG. 7, the ridge J2 of the house J has a structure in which a pair of left and right connecting purlins 29, 29 are sandwiched between upper roof panel main bodies 3A constituting the roofs 2A, 2B. The metal fittings 30 are fixed and fixed from the roof 2A to the roof 2B. The spacer 18 on the roof 2A side
And the core material 41 on the roof 2B side is connected to the combined purlin 29
The spacer 18 and the core material 41
Has a U-shaped angle 43 extending in the longitudinal direction of the building.
Are fixed, and the angle 44 is fixed to the ridge fitting 30. In addition, a plurality of ventilation holes 45 are formed in the side portion 30a of the metal building 30 in the longitudinal direction of the metal building 30 at intervals.

In the state where the roof 2A is constructed as described above, the ventilation layer 5 is extended by the respective spacers 18 from the eaves portion J1 toward the ridge portion J2 along the slope thereof, and these are arranged in the lateral direction. Many are lined up. These ventilation layers 5 are open to the outside on the side of the eaves J1 via the gallery 40, and on the side of the ridge J2 are opened to the outside from the ventilation holes 45 via the inside of the metal fitting 30.

Now, in each of the above solar cell modules 4, as shown in FIG. 4, the different polarities of the adjacent solar cells are between the respective roof panel bodies 3 (3A, 3B) and the respective solar cell modules 4. The electric wire 31 is connected through the ventilation layer 5 and is finally routed to the side of the ridge J2, and is provided in the house J through the roof panel body 3A and the left joint purlin 29 and the main beam 21. The charging means (not shown) is connected to the charging means, and indoor wiring is provided from the charging means to supply electric power.

According to the roof panel 1 of this embodiment having the above structure, the roof panel body 3 (3A, 3B) and the solar cell module 4 attached to the upper surface of the roof panel body 3 (3A, 3B). Since the ventilation layer 5 that is open along the lower surface of the solar cell module 4 and is open in the direction of inclination of the roof is formed between, the heat dissipation of the solar cell module 4 is performed and the temperature rise is suppressed. Moreover, since the ventilation layer 5 is opened in the direction of inclination of the roof and extends from the eaves portion J1 toward the ridge portion J2 and along the inclined surface , the ventilation layer 5 extends from the eaves portion J1 to the ridge portion J2. Ascending air current is generated toward
The airflow passes through the inside of the metal building 30 and exits from the ventilation hole 45 to the outside. That is, the flow of air in the ventilation layer 5 is active due to the upward airflow, and therefore, the lower surface of the solar cell module 4 is directly cooled by the upward airflow, and the effect of suppressing the temperature rise of the solar cell module 4 is suppressed. More promoted. As a result, the energy conversion efficiency of the solar cell module 4 is always maintained high, and stable power supply can be achieved.

The electric wire 31 of each solar cell is connected to the ventilation layer 5.
Wiring inside the ridge of the roof panel body 3 (3A, 3B)
Since it is pulled out to the J2 side and wired inside the house, it is protected by the solar cell unit and is not exposed to the outside ,
Less susceptible to direct wind and rain and sunlight.

Furthermore, the electric wire 31, Okuno pull the ridge portion J2 side by connecting in assembling the roof panel 1
Thus, it is possible to pull out from the ventilation layer 5 to the ridge J2 side at the time of construction and wire indoors, and thus, it is not necessary to perform wiring work of the solar cell on the roof, and construction is not troublesome.

In the above embodiment, only the roof on the south side is constructed with the solar cell-equipped roof panel 1, but of course, both north and south sides may be constructed with the solar cell-equipped roof panel 1.

[0032]

As is apparent from the above description, according to the roof panel with a solar cell of the present invention, a plurality of roof panels with a solar cell are arranged along at least one slope of the roof and fixed to the beam. In a roof with a solar cell of a house or the like, the roof panel, a panel-shaped solar cell unit with a built-in solar cell is pasted on the upper surface of the roof panel body, and between the roof panel body and the solar cell unit. The roof panel is formed by forming a ventilation layer along the lower surface of the solar cell unit and open in the direction of inclination of the roof.
The ventilation layer is fixed to the beam in a state where the ventilation layer extends from the eaves portion toward the ridge portion along the inclined surface thereof, and the electric wire of the solar cell is connected to the roof panel when the roof panel is assembled, and the ventilation is performed.
It is characterized in that it is wired in the layer, and it is drawn out to the ridge side of the roof panel main body and wired in the house.The air flow through the ventilation layer of the roof panel becomes an updraft from the eaves to the ridge. , Therefore, the lower surface of the solar cell unit is directly cooled by this rising air flow, heat dissipation of this solar cell unit is promoted and the temperature rise is suppressed, and as a result, the energy conversion efficiency of the solar cell unit is always kept high. As a result, stable power supply can be achieved. Also, the electric wires of the solar cell are wired in the ventilation layer,
Since it is pulled out to the side and wired inside the house, it is protected by the solar cell unit, does not need to be exposed to the outside, and is not directly affected by wind and rain. Therefore, the deterioration of the electric wire due to wind and rain or sunlight can be suppressed. Furthermore <br/>, the wires of the solar cell, so keep the drawer in the ridge portion by connecting in assembling the roof panel and pull the ridge portion side from the ventilation layer can be wired indoors during construction ,
As a result, various effects such as facilitating handling of indoor wiring can be achieved.

[Brief description of drawings]

FIG. 1 is a perspective view of a house roof to which a roof panel with solar cells according to one embodiment of the present invention is applied.

FIG. 2 is a side sectional view of a roof.

FIG. 3 is a sectional view taken along the line PP of FIG. 2;

FIG. 4 is a perspective view of a roof panel with a solar cell according to an embodiment.

FIG. 5 is a cross-sectional view of a connection member of the solar cell module.

FIG. 6 is an enlarged side view of an eaves tip.

FIG. 7 is a sectional view of a ridge.

[Explanation of symbols]

 1 Roof panel with solar cell 2 (2A) Roof 3 (3A, 3B) Roof panel main body 4 Solar cell unit 5 Ventilation layer 21 Master beam 23, 24 Roof beam 31 Electric wire J House J1 House part J2 Building part

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masato Iijima 2-4-5 Takaido Higashi, Suginami-ku, Tokyo Misawa Homes Co., Ltd. (56) Reference JP-A-5-18051 (JP, A)

Claims (1)

(57) [Claims] 1. Less roof panel with multiple solar cells
In a roof with a solar cell such as a house arranged along one slope of a roof and fixed to a beam, the roof panel is a panel-shaped solar cell unit in which a solar cell is built in on an upper surface of a roof panel body. Is affixed,
A ventilation layer is formed between the roof panel main body and the solar cell unit, the ventilation layer being opened along the lower surface of the solar cell unit and in the inclination direction of the roof. Fixed to the beam in a state of extending along the inclined surface toward the section, the electric wire of the solar cell is used when assembling the roof panel.
Is connected to the roof panel and wired in the ventilation layer.
A roof with a solar cell, which is drawn out to the ridge side of and is wired inside the house.